When the midnight clock strikes in reverse in an abandoned museum, when the cables in the city's sewers are chewed by unknown creatures and emit blue sparks, when ordinary people's watches suddenly turn upside down to point to ten years ago - the "normal" of this world is just a fragile curtain.
Chen Mo, a former special forces soldier with battlefield scars and a mysterious past, was pulled into the "Abnormal Phenomenon Control and Countermeasures Department" by a top-secret transfer order and became the leader of the "Gatekeeper" action team. The team members under his command are all "abnormal": sensitive psykers who can see spiritual traces, rune experts who are obsessed with forbidden knowledge, hackers who can hack into supernatural information flows, heavy-duty armed personnel transformed by abnormal powers, and healers who can purify pollution.
What they are fighting against are twisted entities that have penetrated from the "abnormal dimension", crazy organizations that use supernatural powers for personal gain, and high-level conspiracies hidden under the "Curtain" agreement. Every mission is a gamble of life and death: maintain sanity in a space that distorts reality, hold the bottom line on the edge of humanity and alienation, and maintain the team in the whirlpool of trust and betrayal.
When the "World Source" - the core energy body that supports the abnormal dimension - begins to fluctuate violently, and when various forces start a war across reality and other worlds to compete for it, Chen Mo and his team members will finally understand: the so-called gatekeepers are not only guarding the boundary between the two worlds, but also the last dignity and hope of human civilization. And the price they paid may be something heavier than their lives.